CN215350813U - Sterilizing and electrostatic regenerating box for melt-blown cloth mask - Google Patents

Abstract

The utility model relates to a disinfection and electrostatic regeneration box for a melt-blown cloth mask, which comprises a box body, a movable cover, a high-voltage generator, a timer, a safety switch, a top surface high-voltage electrode, a bottom surface high-voltage electrode, a power interface and the like. Above-mentioned melt and spout cloth gauze mask disinfection and electrostatic regeneration box can resume the filtering capability of gauze mask, prolongs the life of gauze mask, reduces the consumption of gauze mask, practices thrift the spending of gauze mask, reduces the pollution to the environment, lets people can be safety, economy and the use gauze mask protection oneself and family of environmental protection.

Description

Sterilizing and electrostatic regenerating box for melt-blown cloth mask

Technical Field

The utility model relates to a mask disinfection box, in particular to a disinfection box capable of supplementing static electricity for a melt-blown mask, namely a melt-blown mask disinfection and static electricity regeneration box.

Background

The medical mask/N95 mask is worn under the background of global pandemic of respiratory infectious diseases caused by novel coronavirus, and becomes a main effective means for defending people against viruses. The medical mask/N95 mask (hereinafter referred to as "mask") mainly relies on the melt-blown cloth material as the filter element, and the melt-blown cloth has small physical filter pore size, more importantly, the melt-blown cloth has high-voltage static electricity, and can protect the virus with smaller volume than the filter pore size (only a few tenths of microns) by utilizing the electrostatic adsorption principle.

After the mask leaves a factory, high-voltage static electricity filled in a factory can be slowly and naturally weakened, even if the mask is not used, the static electricity on the mask can be weakened or even disappear within one to two years, and the mask is out of date. If the mask is used, the static electricity on the mask is rapidly reduced due to the moisture in the breath of a person, which is why the mask is recommended to be replaced for four hours. After the static electricity on the mask is weakened and disappears, the mask loses the ability to defend against viruses.

Ordinary civilian gauze mask that does not contain melt-blown cloth is not taken static, and melt-blown cloth gauze mask except that static can weaken naturally during the save, and static can subdue fast after the beginning uses, thereby still other many factors can lead to the static on the gauze mask not enough to influence the filtration performance of gauze mask, for example: static electricity is too fast because the package of the mask is not used in time after being unsealed, static electricity cannot be stored for a long time because the melt-blown cloth material has poor quality, the static electricity of the mask is not enough because of poor process in the link of applying static electricity to the melt-blown cloth, and the static electricity is too early lost because of the package defect or the poor storage of the mask.

In industrial production, the step of charging static electricity to the mask is a high-voltage static electricity electret process in a melt-blown fabric factory, the melt-blown fabric applied with the static electricity is delivered to the mask factory to manufacture the mask, namely the static electricity is added before the mask is manufactured, and at present, no equipment for directly supplementing the static electricity to the mask exists.

If can design one kind and can disinfect and supply the civilian equipment of static for the gauze mask, just can give the gauze mask disinfection and supply static under the condition that the goods and materials are in short supply or economy is restricted, resume the filtering capability of gauze mask, the life of extension gauze mask reduces the consumption of gauze mask, practices thrift the expense of gauze mask, reduces the pollution to the environment, lets people can be safety, economy and the environmental protection use gauze mask protection oneself and family.

When high-voltage electrostatic electret is carried out, melt-blown cloth is placed in the middle of a high-voltage electrode, and dielectric polarization phenomenon is generated on the melt-blown cloth under the action of a high-voltage electric field, namely the melt-blown cloth is changed into an electret capable of storing a large amount of electric charges for a long time. The top surface is a discharge electrode (discharge needle) and the bottom surface is a flat electrode, the discharge needle will perform corona discharge, generate a large amount of free charged ions (positive or negative ions) in the air, and move from the top surface electrode to the bottom surface electrode under the action of the electric field. Charged ions are attracted to the meltblown web as they pass between the electrodes, thereby charging the meltblown web with a large amount of electrostatic charge.

The industrial high voltage electrostatic electret process is completed instantaneously, so it needs very high voltage and very high power, and as the mask electrostatic complement equipment for civil use, the voltage and power of the high voltage electric field are limited, and because the dielectric polarization can be completed instantaneously through the non-woven fabric of the mask outer layer, the charging takes time, so the charge is accumulated gradually. If the mask is used for civil use, the masks can be charged with static electricity one by one, and the static electricity charging time can be wider and more abundant.

The high-voltage electrostatic electret technology can not only supplement static electricity for a melt-blown cloth filter element in the mask, but also thoroughly disinfect the mask by utilizing byproducts including a high-voltage electric field, positive/negative ions, ozone and the like existing in the electret technology.

High-voltage electric field: the high-voltage generator used for the high-voltage electrostatic electret generates high-frequency high-voltage alternating current after oscillating and boosting low-voltage direct current, and the high-frequency high-voltage alternating current is converted into high-frequency high-voltage pulsating direct current after rectification. That is to say, the high voltage electric field for electret is equivalent to the high voltage pulse electric field to a great extent, and the high voltage pulse electric field has a strong sterilization effect, and the cell membranes of the microorganisms such as bacteria and viruses are electrically punctured under the action of the strong electric field to generate irreparable perforation or rupture, so that the cell tissues are damaged, and the microorganisms lose activity.

Positive/negative ions: the high-voltage electrostatic electret technology can charge the fusion-spraying cloth with positive static electricity and also can charge the fusion-spraying cloth with negative static electricity, namely, a large amount of positive ions and a large amount of negative ions can be generated. The medical field has confirmed that the negative ions have better bactericidal action, and the negative oxygen ions carry redundant electrons and can destroy the protein molecular structure of microorganisms such as bacteria, viruses and the like, so that structural change or energy transfer is generated to cause the death of the microorganisms. Therefore, in order to take the disinfection effect into consideration, it is recommended to supplement the static electricity of negative charges to the mask, that is, the corona discharge electrode is the negative electrode of high-voltage direct current, and due to the principle that like charges repel and opposite charges attract, positive ions generated by the corona are adsorbed and neutralized by the negative charges on the discharge electrode, and negative ions generated by the corona are repelled and pushed away by the negative charges on the discharge electrode, so that a large amount of free negative ions are generated around the discharge electrode. Under the action of the electric field, negative ions move to the positive electrode on the bottom surface. When the negative ions pass through the mask, the surface and the inner layer of the mask can be disinfected. In addition, a part of negative ions can be adsorbed on the melt-blown cloth filter element to become static electricity, and the other part of negative ions can pass through the mask to reach the bottom electrode. The bottom electrode is a positive electrode, a certain amount of positive ions are generated around the bottom electrode, negative ions meet the positive ions to neutralize positive and negative charges, and the residual negative ions finally reach the surface of the bottom electrode to neutralize the positive charges on the bottom electrode. The neutralization of positive and negative charges can generate huge energy, and can directly kill microorganisms. The mask is placed on the bottom electrode and just in the range of releasing energy when the positive and negative charges are neutralized, so that the mask can be sterilized again by the energy.

Ozone: ozone is a strong oxidant and has strong disinfection and sterilization effects. The ozone can oxidize and decompose enzymes required by glucose in the bacteria to inactivate and kill the bacteria; ozone can directly act with bacteria and viruses to destroy organelles, DNA and RNA of the bacteria and destroy metabolism of the bacteria, so that the bacteria die; ozone can permeate cell membrane tissues, invade cells, act on outer membrane lipoprotein and inner lipopolysaccharide, and cause bacteria to be dissolved and killed by permeability distortion. When high voltage electrostatic electret is used, ozone is generated by corona discharge. Ozone can be disinfected, but the ozone is harmful to human bodies due to too high concentration, so that the power of discharge can be controlled, the generation of excessive ozone is avoided, and the ozone concentration can reach a certain degree in a closed container as long as the time is long, so that certain disinfection and deodorization effects are achieved.

Ultraviolet ray: it is well known that uv light is also a very effective and mature means of disinfection. Although the disinfection effect can be further improved by adding ultraviolet disinfection, compared with the disinfection means which is attached to the high-voltage electrostatic electret technology, such as the aforementioned high-voltage electric field, positive/negative ions, ozone and the like, the additional cost is required to be added by adding ultraviolet. Ultraviolet rays are divided into a plurality of types, and only deep ultraviolet rays in a UVC frequency band can be effectively disinfected. The traditional hot cathode ultraviolet lamp tube has larger power, is not suitable for miniaturization, contains mercury which is not environment-friendly and is gradually eliminated. In recent years, ultraviolet LED technology is gradually developed, but most of the LED ultraviolet disinfection products on the market actually use low-price ultraviolet LEDs without actual disinfection effects in UVA and UVB frequency bands, the cost of the LEDs in the truly effective UVC frequency band is very high, the LEDs have a fatal weakness that the LEDs are afraid of static electricity, if the LEDs are used on other products, a large amount of static electricity is inevitably generated in the current high-voltage electret environment of melt-blown cloth, and the LEDs are easily burnt out. Finally, the cold cathode ultraviolet lamp tube is left as an option, and a high-voltage driving circuit is needed besides the lamp tube, so that the cost is relatively low. In addition, the ultraviolet rays only have a good disinfection effect on the surface of an object, the mask needs to be disinfected on the front side and the back side, the cost is further increased due to the fact that the number of ultraviolet lamp tubes is increased, or the operation is more complicated due to the fact that the mask needs to be turned on the front side and the back side in the process. Moreover, ultraviolet disinfection needs to reach a certain irradiation dose, such as the dose of ultraviolet irradiation on the inner layer of the mask is difficult to reach the requirement, and even the ultraviolet in the deep layer of the mask can not be irradiated at all, namely the ultraviolet disinfection mask is not thorough. If the increased cost is considered, it can be said that the ultraviolet sterilization is not a very cost-effective choice in the current mask sterilization and electrostatic regeneration scenarios. For this reason, UV disinfection is only used as an option, not as a necessary standard.

Alcohol: alcohol is a traditional high-efficiency disinfectant, and alcohol spray can be conveniently used for disinfecting the mask. However, many experts remind that alcohol cannot be used for disinfecting the mask, because the alcohol can take away static electricity in the mask and influence the filtering effect of the mask. Before no equipment for supplementing static electricity to the mask appears, the suggestion of experts is undoubtedly correct, and if the current equipment capable of supplementing static electricity to the mask exists, a better disinfection effect is required, 75% medical alcohol spray can be directly sprayed to the mask, so that the mask can be completely soaked by alcohol, and thorough disinfection can be achieved. And then, the alcohol on the mask is completely dried, and then the mask is subjected to static electricity supplementation. This should be a more effective way of disinfecting the mask and replenishing the static electricity, far more economical and effective than adding uv disinfection.

Disclosure of Invention

In view of the above circumstances, the present invention provides a mask disinfection and electrostatic regeneration box, which can conveniently supplement static electricity for a medical mask/N95 mask (hereinafter, collectively referred to as "mask") using meltblown fabric as a filter element, and can thoroughly disinfect the mask by using various methods such as a high voltage electric field, positive/negative ions, ozone, etc., and can disinfect the mask and recover the filtering function of the mask under the conditions of material shortage or limited economy, thereby prolonging the service life of the mask, reducing the consumption of the mask, saving the cost of the mask, reducing the pollution to the environment, and enabling people to use the mask safely, economically and environmentally to protect themselves and family members.

The utility model relates to a mask disinfection and static regeneration box, which comprises a box body (1), a movable cover (2), a high-voltage generator (3), a timer (4), a safety switch (5), a top surface high-voltage electrode (6), a bottom surface high-voltage electrode (7), a power interface (8) and the like.

Preferably, the method comprises the following steps: the box body (1) and the movable cover (2) form a shell which can be opened and closed; the high-voltage generator (3) is arranged on the side surface in the box body (1); the timer (4) is arranged on the movable cover (2), and a knob of the timer (4) is positioned on the front side of the movable cover (2) and can set the time for working at fixed time; the safety switch (5) is positioned above the high-voltage generator (3) and is used as a safety measure, and if the box is forcibly opened in work, the safety switch (5) can automatically turn off the power supply; the top surface high-voltage electrode (6) and the bottom surface high-voltage electrode (7) are respectively arranged at the central positions of the inner sides of the movable cover (2) and the box body (1), the mask is placed on the bottom surface high-voltage electrode (7), a high-voltage electric field formed between the two electrodes not only performs high-voltage electret and static electricity application on a melt-blown cloth filter element of the mask, but also plays a role in disinfection by the high-voltage electric field and positive/negative ions and ozone generated by the high-voltage electric field; the power interface (8) is arranged on the side surface inside the box body (1) and is used for being connected with an external power supply.

The utility model can solve the problems of mask supply shortage, high price rise, uneven quality, environmental pollution and the like.

1) Prolonging the service time of the mask: the mask is limited in service time, static electricity is supplemented for the mask, the service time of the mask is prolonged, the time limit that the mask needs to be replaced in four hours is broken through, and therefore the consumption of the mask can be reduced.

2) Recovering the mask failure function: for the mask which is not used for a long time after being unsealed or the mask which is not properly stored due to packaging defects, static electricity is supplemented, so that the filtering function of the invalid mask is recovered again, and the expense of the mask can be saved. In addition, static electricity is reapplied to the mask which is out of service due to expiration, so that the supply of the mask can be replenished in an emergency.

3) Make up gauze mask quality gap: the masks in the market are of good quality, static electricity is supplemented to the masks with poor melt-blown cloth quality or poor electrostatic electret technology, even though the masks cannot store static electricity for a long time, the masks are not worried about the situation of insufficient static electricity as long as the masks are used in time after the static electricity is supplemented, and therefore resources can be fully utilized and the masks are difficult to be used under the situation of material shortage or economic limitation.

4) Environmental protection reuse gauze mask: in the low risk area, for the used gauze mask of individual oneself disinfect and resume static, can carry out reuse to the gauze mask, just so can use the gauze mask more economically and environmentally friendly under safe prerequisite, reduce the pollution to the environment on the basis of gauze mask expense.

Drawings

Fig. 1 is a perspective view of the present invention in an open state.

Fig. 2 is a perspective view of the present invention in a closed state.

Fig. 3 is a view showing the configuration of the present invention.

In the figure: the device comprises a box body (1), a movable cover (2), a high-voltage generator (3), a timer (4), a safety switch (5), a top surface high-voltage electrode (6), a bottom surface high-voltage electrode (7) and a power interface (8).

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 to 3 are structural views of a preferred embodiment of the present invention. Referring to fig. 1 to 3, the mask sterilization and electrostatic regeneration box according to the preferred embodiment of the present invention comprises a box body (1), a movable cover (2), a high voltage generator (3), a timer (4), a safety switch (5), a top high voltage electrode (6), a bottom high voltage electrode (7), and a power interface (8).

Preferably, the box body (1) and the movable cover (2) form an openable shell, the shell can be placed into the mouth cover when opened, and the shell becomes a fully-sealed container when closed, so that a human body is prevented from directly contacting high voltage inside the shell to ensure the operation safety, and generated positive/negative ions and ozone are sealed in the container, thereby improving the efficiency of disinfection and electrostatic charging. The inside of the current shell has a certain volume of space, so that a plane mask can be placed, and a three-dimensional N95 mask can be placed conveniently.

Preferably, the high-voltage generator (3) is arranged on the side surface inside the box body (1), the high-voltage generator (3) is recommended to be a finished direct-current high-voltage package which is packaged by full resin, the high-voltage output is required to be at least DC-30kV, and the low-voltage input is recommended to be DC-5V, so that the power supply can be supplied by USB.

Preferably, the timer (4) is arranged on the movable cover (2), and a knob of the timer (4) is positioned on the front surface of the movable cover (2) and can set the time for working at fixed time. At least a timer with a timing length of 60 minutes is selected, generally speaking, the timing can be set for 15 minutes for a plane mask, the timing can be set for 30 minutes for an N95 three-dimensional mask, and the timing time can be further prolonged if the disinfection effect is enhanced. The utility model can generate high voltage electric field, and can generate a large amount of positive/negative ions, and the inner part of the shell can also have strong static electricity when in work, so the timer (4) proposes to directly adopt a mechanical timing switch with a plastic shell, and of course, if anti-interference shielding measures are taken, the timing switch with a metal shell or a digital timing switch can also be used.

Preferably, the safety switch (5) is a tact switch, and a non-inductive reed switch or an infrared inductive switch may be used. The safety switch (5) is positioned above the high-voltage generator (3), when the movable cover (2) is closed, the trigger switch is used for switching on the power supply, namely, as a safety measure, if the box is forcibly opened in work, the power supply can be automatically switched off.

Preferably, the top surface high voltage electrode (6) and the bottom surface high voltage electrode (7) are respectively arranged at the central positions of the inner sides of the movable cover (2) and the box body (1). Two poles of high-voltage direct current output by the high-voltage generator (3) are respectively connected with the top surface high-voltage electrode (6) and the bottom surface high-voltage electrode (7).

Preferably, the bottom high-voltage electrode (7) is a flat electrode, and the mask is placed on the bottom high-voltage electrode (7). If the mask is a plane mask, the mask is directly and flatly placed on the bottom electrode; in the case of an N95 three-dimensional mask, the mask is unfolded and flattened and then placed on the bottom electrode. From the hygienic point of view, it is recommended that the mask be placed with its outer side facing downward.

Preferably, the top surface high voltage electrode (6) is a discharge electrode, the discharge electrode can use an electrode plate which is full of discharge needles or carbon brushes, and carbon fiber cloth can be directly covered on the surface of the electrode plate from the viewpoint of reducing the cost. A high-voltage electric field generated between the two high-voltage electrodes is used for performing high-voltage electret treatment on the melt-blown cloth filter element of the mask to change the melt-blown cloth filter element into a dielectric electret which can store static electricity for a long time; the top surface high-voltage electrode (6) carries out corona discharge to generate a large amount of free charged ions, the charged ions can move towards the bottom surface high-voltage electrode (7) under the action of a high-voltage electric field, and when the charged ions pass through the middle melt-blown cloth filter element, the charged ions can be adsorbed by the melt-blown cloth filter element which is changed into the dielectric electret, and are changed into static electricity to be stored on the melt-blown cloth filter element; in addition, the high-voltage electric field, the positive/negative ions and the ozone generated by the two electrodes also play a role in disinfection.

Preferably, the top surface high voltage electrode (6) is a discharge electrode and is connected with the negative electrode of the high voltage direct current output end of the high voltage generator (3); the bottom surface high-voltage electrode (7) is a flat plate electrode and is connected with the positive electrode of the high-voltage direct-current output end of the high-voltage generator (3), so that free charged ions generated by the top surface high-voltage electrode (6) are negative ions, the negative ions have a better disinfection effect, static electricity finally supplemented for the melt-blown cloth filter element is negative charge static electricity, and the retention time of the negative charge static electricity on the melt-blown cloth is longer than that of the positive charge static electricity theoretically.

Preferably, the power interface (8) is arranged on the side surface inside the box body (1), the high-voltage generator (3) is supplied with 5V direct current, so that a USB socket (such as Micro-USB or Mini-USB) can be selected as the current power interface (8), and power adapters of various USB standards or a mobile power supply can be conveniently used for supplying power.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but rather, to enable any person skilled in the art to make modifications and innovations without departing from the spirit and scope of the present invention. The scope of the present invention is defined by the appended claims, and all changes and modifications that can be made in the constructions, features, and principles described herein are intended to be included within the scope of the utility model.

Claims (8)

1. Melt and spout cloth gauze mask disinfection and static regeneration box, by box body (1), movable cover (2), high voltage generator (3), timer (4), safety switch (5), top surface high voltage electrode (6), bottom surface high voltage electrode (7), power source (8) totally eight parts constitute its characterized in that: the box body (1) and the movable cover (2) form a shell which can be opened and closed; the high-voltage generator (3) is arranged on the side surface inside the box body (1); the timer (4) is arranged at the position close to the edge of the movable cover (2); the safety switch (5) is positioned above the high-voltage generator (3); the top surface high-voltage electrode (6) and the bottom surface high-voltage electrode (7) are respectively arranged at the central positions of the inner sides of the movable cover (2) and the box body (1); the power interface (8) is arranged on the side surface inside the box body (1).

2. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the high-voltage generator (3) boosts low-voltage direct current into high-voltage direct current, is respectively connected with the top surface high-voltage electrode (6) and the bottom surface high-voltage electrode (7), and is used for generating a high-voltage electric field for disinfecting and supplementing static electricity to the melt-blown cloth mask.

3. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: and a knob of the timer (4) is positioned on the front surface of the movable cover (2) for manually setting the time for timing work.

4. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the safety switch (5) can be triggered and the power supply can be switched on when the movable cover (2) is closed, namely as a safety measure, if the box is forcibly opened in work, the safety switch (5) can automatically switch off the power supply.

5. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the top surface high voltage electrode (6) is used as a discharge electrode and adopts one form of an electrode plate which is fully distributed with metal discharge needles, an electrode plate which is fully distributed with carbon brushes and an electrode plate which is covered with carbon fiber cloth.

6. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the bottom high-voltage electrode (7) is a metal flat plate electrode, the mask is placed on the bottom high-voltage electrode (7), the bottom high-voltage electrode (7) and the top high-voltage electrode (6) are parallel to each other in a face-to-face mode, and a high-voltage electric field is formed between the two electrodes, so that the effects of performing high-voltage electret on the melt-blown cloth filter element and applying static electricity are achieved.

7. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the corona discharge of the top surface high-voltage electrode (6) and the bottom surface high-voltage electrode (7) not only can generate a large amount of free positive/negative ions, but also can generate a certain amount of ozone, and the positive/negative ions, the ozone and a high-voltage electric field can play a role in disinfection.

8. The meltblown fabric sterilization and electrostatic regeneration cartridge of claim 1, wherein: the power interface (8) is used for connecting an external power supply.

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